Cita APA (7a ed.)

Gordon, D. (1990). Green cities: Ecologically sound approaches to urban space. Black Rose Books.

Cita Chicago Style (17a ed.)

Gordon, David. Green Cities: Ecologically Sound Approaches to Urban Space. Montreal: Black Rose Books, 1990.

Cita MLA (9a ed.)

Gordon, David. Green Cities: Ecologically Sound Approaches to Urban Space. Black Rose Books, 1990.